Argh! Upping the megapixel count of the camera will not lead to better pictures unless you have great light or the sensor manufacturer has made some serious advances in ISO performance. iPhone has enough of a noise problem without aggravating it even further. Check out
this Gizmodo post for the lowdown.
Apple appears to take the same route as Canon - sucking in clueless consumers with high pixel counts, without any regard for noise. Call me biased, but Apple should be taking the Nikon approach of conservative pixel counts but excellent noise performance, even if it involves explaining it to customers.